package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.feign.ThirdPartService;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegistVo;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exception.BizCodeEnum;
import com.atguigu.common.vo.MemberRespVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {

    @Autowired
    ThirdPartService thirdPartService;

    @Autowired
    MemberFeignService memberFeignService;

    @Autowired
    StringRedisTemplate redisTemplate;

    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendCode(@RequestParam("phone") String phone) {

        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if (!StringUtils.isEmpty(redisCode)) {
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - l < 60000) {
                // 60秒内不能再发
                return R.error(BizCodeEnum.SMS_CODE_EXCEPTION.getCode(), BizCodeEnum.SMS_CODE_EXCEPTION.getMessage());
            }
        }

        //2、验证码的再次校验
        String code = UUID.randomUUID().toString().substring(0, 5) + "_" + System.currentTimeMillis();

        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone, code, 10, TimeUnit.MINUTES);
        thirdPartService.sendCodes(phone, code.split("_")[0]);
        return R.ok();
    }


    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result, RedirectAttributes redirectAttributes) {
        if (result.hasErrors()) {
            /**
             * .map(fieldError -> {
             *                 String field = fieldError.getField();
             *                 String message = fieldError.getDefaultMessage();
             *                 errors.put(field,message);
             *                 return
             *             })
             */
            Map<String, String> errors = result.getFieldErrors().stream().
                    collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));
//        model.addAttribute("errors", errors);
            redirectAttributes.addFlashAttribute("errors", errors);
            //校验出错
            return "redirect:http://auth.gulimall.com/reg.html";
        }
        //真正的注册，调用远程服务进行注册
        // 1、校验验证码
        String code = vo.getCode();
        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());

        if (!StringUtils.isEmpty(s)) {
            if (code.equals(s.split("_")[0])) {
                //删除验证码  令牌机制
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
                // 验证码通过。 真正注册。调用远程服务进行注册.
                R r = memberFeignService.regist(vo);
                if (r.getcode() == 0) {
                    // 成功
                    return "redirect:http://auth.gulimall.com/login.html";
                } else {
                    redirectAttributes.addFlashAttribute("errors", "出错了");
                    return "redirect:http://auth.gulimall.com/reg.html";
                }
            } else {
                HashMap<String, String> errors = new HashMap<>();
                errors.put("code", "验证码错误");
                redirectAttributes.addFlashAttribute("errors", errors);
                return "redirect:http://auth.gulimall.com/reg.html";
            }
        } else {
            HashMap<String, String> errors = new HashMap<>();
            errors.put("code", "验证码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/reg.html";
        }

    }


    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes, HttpSession session){

        //远程登陆
       R r = memberFeignService.login(vo);
        if (r.getcode() == 0){
            MemberRespVo data = r.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            return "redirect:http://gulimall.com";
        }else {
            HashMap<String, String> errors = new HashMap<>();
            errors.put("wrong", "用户名或密码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }


    @GetMapping("/login.html")
    public String loginPage(HttpSession session){

        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
        if (attribute == null) {
            return "login";
        }else {
            return "redirect:http://gulimall.com";
        }

    }




}
